Cylinder lock housing



FIG. 1 is a front view of my new design of a cylinder lock housing;

FIG. 2 is a right side view of my new design of the cylinder lock housing, a left side view being a mirror image thereof;

FIG. 3 is a top view of my new design of the cylinder lock housing, a bottom view being a mirror image thereof; and,

FIG. 4 is a perspective view of my new design of the cylinder lock housing. 

The ornamental design for a cylinder lock housing, as shown and described. 